2XKO (Fighting, PC & Consoles, UE4/UE5)

• Leading champion engineering for Jinx and Blitzcrank, contribute to early prototyping of unreleased champions, and deliver foundational gameplay systems including fuse mechanics, Versus mode, and pregame flow — owning both client and backend (Golang) implementation.

• Driving async asset loading initiatives to reduce gameplay hitches and improve player experience, and collaborate on micro-patching systems for live content delivery.

• Reduced character load time in the editor from 62s to 11s (~6x faster) by introducing custom serialization, significantly improving developer iteration speed.

• Led Unreal Engine 5 migration across gameplay, rendering, shaders, and build pipelines during active development.

• Implemented Niagara user parameter override plugin that enables 100+ chroma variations per champion without asset duplication, improving content scalability and production efficiency.

• Established replay tooling for gameplay debugging and issue reproduction, and built automated champion and stage performance testing with dashboard integration to enable continuous regression monitoring and maintain production stability.

• Extended Unreal pose blending limits at the engine level to enable extreme facial animation, enhancing champion expressiveness and readability.

• Led cross-team editor tooling efforts, designing and implementing developer-facing gameplay tools to accelerate content creation and debugging workflows.

The Callisto Protocol (Horror, PC & Consoles, UE4)

• Led gameplay automation testing in collaboration with external test engineers to improve regression coverage and production stability.

• Supported PS4 and Xbox One level streaming and console performance optimization efforts.

The Callisto Protocol (Horror, PC & Consoles - UE4)

• Established UE4 tooling standards and a validated asset pipeline, collaborating with content creators and engineers to resolve workflow bottlenecks while building automated asset, rendering, and performance validation systems, profiling, and debugging tools.

• Developed an OLAT (One Light at a Time) viewer to support Callisto BRDF development and material response validation under controlled lighting conditions.

• Extended UE4 Sequencer to support animation of layered material properties and engineered a DCC-to-UE4 cinematic pipeline for automated sequence generation.

• Built a Maya FBX exporter with Perforce integration to streamline DCC-to-engine asset and cinematic workflows.

• Extended Unreal Game Sync with AWS S3 integration to enable multi-site lighting data distribution.

Power Rangers: Battle for The Grid (Fighting, PC & Consoles – Unity)

• Led integration of PlayStation 4, Xbox One, and Nintendo Switch SDKs, delivering authentication, social systems, and DLC workflows.

• Reduced load times by 40% by restructuring asset packaging and load sequencing.

• Led a cross-system refactor eliminating runtime memory allocations during gameplay.

• Leveraged the in-game replay system to reproduce identical gameplay scenarios across platforms for consistent profiling and performance optimization.

• Partnered with engineering and production leadership to define technical direction and execution strategy, delivering the project within a 6-month production cycle.

Power Rangers: Legacy Wars (Action, Mobile – Unity)

• Prototyped and implemented a rollback netcode architecture, improving input latency handling and synchronization stability for competitive PvP combat.

• Implemented replay and spectator systems to support competitive features and live-service visibility.

• Designed and developed a data-driven patching system and tooling to enable rapid content updates without requiring full client releases.

• Established CI/CD infrastructure (Jenkins, HockeyApp) and built internal operational tooling to automate build, testing, distribution, and live service workflows.

• Authored and maintained technical design documentation, collaborating with production and QA teams to manage releases and resolve live issues.

ChronoBlade(Action RPG, Mobile - Unity)

• Led cross-regional engineering teams (USA, Korea, China) across gameplay and platform initiatives.

• Designed and implemented load-testing clients to validate backend scalability for 300K+ CCU.

• Created automated desync detection tooling to improve multiplayer simulation stability.

• Partnered with Netmarble(Korea) and Netease(China) to deliver localization, regional deployment, and ongoing live operations support.

ChronoBlade(Online Action RPG, Web - Unity)

• Architected a fully custom animation state machine–driven combat framework and developed an in-house visual authoring tool, enabling designers to iterate and extend combo and skill systems without engineering intervention.

• Built a deterministic lock-step networking model with fixed-point simulation and collision systems to guarantee cross-platform consistency between Flash and Unity clients.

• Developed character parts customization pipeline and preview tooling.

• Established CI-driven asset pipeline and optimized gameplay systems for memory and load performance.